Aube by Honeywell Home TH135-01-B/U Hydronic Heating Non-Programmable Thermostat

From the Manufacturer This easy-to-use Aube by Honeywell Non-Programmable Thermostat saves three temperature settings and features pump protection. Selectable temperature control gives the thermostat flexibility to control a range of heating applications. Comfort, economy and vacation presets enable temperature changes at the touch of a button. Pump protection activates pump for one minute every 24-hours to prevent seizure. Precise LCD shows room temperature in increments of 0.1-Degree Celsius or 0.1-Degree Fahrenheit

• Compatible with hydronic floor heating and central heating; also compatible with electric heat applications using a relay (see accessories)
• 2-Ampere (inductive) 24-Volt R, W Millivolt compatible
• Remote input enables change of temperature modes by phone (Telephone controller required - Aube by Honeywell CT240)
• Low battery indicator gives 60-day warning to replace battery (2 'AA' batteries required)
• Dimensions (height by width by depth): 3.1-Inch by 3.1-Inch by 0.8-Inch